default to compile in, but also allow plugins

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

walker/walkers/readFuzz/fuzz.go

@@ -0,0 +1,30 @@
+package readFuzz
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+
+	"git.thisco.de/vbatts/fuzz-walker/walker"
+)
+
+func init() {
+	walker.RegisterFuzzFunc(Name, FuzzFunc)
+}
+
+const Name = "readFuzz"
+
+func FuzzFunc(path string, info os.FileInfo) error {
+	if !info.Mode().IsRegular() {
+		return nil
+	}
+
+	fd, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer fd.Close()
+
+	_, err = io.Copy(ioutil.Discard, fd)
+	return err
+}